anyone have a pr3 chipped??

i was thinking about throwing a chip in my b16 because it seems to be a cheap and benifitial mod. Was checking out these 2 chips…

customchip:
http://cgi.ebay.com/ebaymotors/JDM-88-91-HONDA-CIVIC-CRX-PR3-CUSTOM-ECU-CHIP-B16A-VTEC_W0QQitemZ8000823040QQcategoryZ33597QQrdZ1QQcmdZViewItem

spoon chip:
http://cgi.ebay.com/ebaymotors/SPOON-CHIP-88-91-HONDA-CIVIC-SIR-PR3-ECU_W0QQitemZ4575075110QQcategoryZ107058QQrdZ1QQcmdZViewItem

Jun chip:
http://cgi.ebay.com/ebaymotors/JUN-Chip-Honda-88-91-Civic-Crx-pr3-ecu_W0QQitemZ8000672984QQcategoryZ33597QQrdZ1QQcmdZViewItem

any comments or suggestions